18984825318 has 16 divisors (see below), whose sum is σ = 38324508480. Its totient is φ = 6269132136.

The previous prime is 18984825313. The next prime is 18984825329. The reversal of 18984825318 is 81352848981.

It is a super-2 number, since 2×18984825318² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18984825313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14785048 + ... + 14786331.

It is an arithmetic number, because the mean of its divisors is an integer number (2395281780).

Almost surely, 2^18984825318 is an apocalyptic number.

18984825318 is an abundant number, since it is smaller than the sum of its proper divisors (19339683162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18984825318 is a wasteful number, since it uses less digits than its factorization.

18984825318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29571491.

The product of its digits is 4423680, while the sum is 57.

The spelling of 18984825318 in words is "eighteen billion, nine hundred eighty-four million, eight hundred twenty-five thousand, three hundred eighteen".